Desmoglein 1 deficiency results in severe dermatitis, multiple allergies and metabolic wasting

  • Liat Samuelov
  • , Ofer Sarig
  • , Robert M. Harmon
  • , Debora Rapaport
  • , Akemi Ishida-Yamamoto
  • , Ofer Isakov
  • , Jennifer L. Koetsier
  • , Andrea Gat
  • , Ilan Goldberg
  • , Reuven Bergman
  • , Ronen Spiegel
  • , Ori Eytan
  • , Shamir Geller
  • , Sarit Peleg
  • , Noam Shomron
  • , Christabelle S. M. Goh
  • , Neil J. Wilson
  • , Frances J. D. Smith
  • , Elizabeth Pohler
  • , Michael A. Simpson
  • W. H. Irwin McLean, Alan D. Irvine, Mia Horowitz, John A. McGrath, Kathleen J. Green, Eli Sprecher

    Research output: Contribution to journalLetterpeer-review

    289 Citations (Scopus)

    Abstract

    The relative contribution of immunological dysregulation and impaired epithelial barrier function to allergic diseases is still a matter of debate. Here we describe a new syndrome featuring severe dermatitis, multiple allergies and metabolic wasting (SAM syndrome) caused by homozygous mutations in DSG1. DSG1 encodes desmoglein 1, a major constituent of desmosomes, which connect the cell surface to the keratin cytoskeleton and have a crucial role in maintaining epidermal integrity and barrier function. Mutations causing SAM syndrome resulted in lack of membrane expression of DSG1, leading to loss of cell-cell adhesion. In addition, DSG1 deficiency was associated with increased expression of a number of genes encoding allergy-related cytokines. Our deciphering of the pathogenesis of SAM syndrome substantiates the notion that allergy may result from a primary structural epidermal defect.
    Original languageEnglish
    JournalNature Genetics
    Early online date25 Aug 2013
    DOIs
    Publication statusPublished - 2013

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